Tool for dressing emery-wheels



(No Model.)

G. W. KAMERER. TOOL EOE DRESSING EMEEY WHEELS.

No. 511,083. Patented Dec. 19, 1893.

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GEORGE XV. KAMERER, OF NORWICH, CONNECTICUT.

TOOL FOR DRESSING EMERY;WHEEL'S.

SPECIFICATION forming part of Letters Patent No. 511,083, dated December19, 1893.

Applicationfiled Apn'l 10, 1893.

To 6033 whont it may concern:

Be it known that I, GEORGE W. KAMERER, a citizen of the United States,residing at Norwioh, in the county of New London and State ofConnecticut, have made certain new and useful Improvements in Tools forDressing Emery-IVheels,which improvements are fully set forth anddescribed in the following specification, reference being had to theaccompanying drawings.

My invention relates to devices for truing up emery wheels and has forits object the production of a tool which may be more easily controlledthan those now in common use and which shall be in a measure.selfoiling. I have also improved various details of such tools, all beingdescribed hereinafter.

In the annexed drawings, Figure 1 shows an emery wheel, portion of alathe bed, a toolsupporting carriage mounted thereon, and an emery wheeldresser of my improved form. Figs. 2 and 3 are, respectively, side andplan views of said dresser, enlarged to nearly full size, and Fig. 4. isa view of the head portion of said dresser showing the side oppositethat of Fig. 3. Fig. 5 is a sectional view on line s0-a: of Fig. .1. andFig. '6 is a sectional view on line 2-2 of the same figure. Fig. 7 is across sectional view on line yy of Fig. 3 and Fig. 8 shows a crosssection of the handle of the tool at line .r-zr of Fig.2. Fig. 9 is aplan view of the head portion of the tool and Fig. 10 shows side and endviews of a threaded roll which is revolubly mounted in said head upon ahollow axle, which latter is illustrated by side, cross sectional, andend views in Fig. 11. Fig. 12 shows one of the screws which I employ toretain said axle in place within the tool head. Fig. 13 shows side,sectional, and end views of anti-friction rolls which I provide on oneside of the tool-head and Fig. 14: shows similar views of a block hwhich I provide upon the opposite side of said head and which serves asa fulcrum upon which the tool may be rocked when in use.

In the drawings the letter a indicates the handle of my improved tool,the same being preferably cored and chambered as shown in Fig. 8 tolighten it somewhat, and the extreme end of said handle is pertorated,as at a, to

Serial No, 469,736. (No model.)

provide an opening by means ofwhich the tool may be hung up when not inservice. The opposite end of the tool is formed as a head, or block a ofgeneral rectangular shape, having its outer portion formed with a recessa of sufficient size to receive a roll I; which is here shown asthreaded throughout its entire length and mounted upon a hollow axle 0,whose ends are supported in the projecting portions of head a as bestseen in Fig. 6 of the drawings. These projecting portions of the headare drilled to receive said axle and are also tapped at each end toreceive screws d which, when they are screwed home, abut the hollow axleand serve both to exclude dirt and grit and also to prevent oil fromoozing from said axle. When about to assemble the axle and cutting rollof my device I first pack the cavity in the axle with wool, sponge orother similar porous material and saturate the same with oil. I thenprovide one or more radial openings c', leading outward from the oilreservoir thus provided, and through these openings the oil may reachthe periphery of the axle to lubricate the axial bearing of the roll 17.The supply of oil may be renewed when necessary by simply removing oneof the screws d and injecting oil into the axle opening until the woolor other packing is again saturated.

Upon one face of the head or are two rolls e that are loosely mountedupon screws 6'. When my improved tool is in use these rolls bear uponthe back side of the tool-rest f of the lathe, as seen in Fig. 1, andwhen it is desired to move the complete tool sidewise to true up thefiat faceof a wide emery wheel, these rolls 6 revolve upon theirsupporting screws e, instead of binding as in the case of a stud formedas a rigid part of head a as now used: By thus reducing friction thetool may be more easily controlled "and a better result obtained. Foruse in dressing emery wheels having a half round face I provide upon theopposite side of head a a single rectangular block 72., located midwayof the length of the roll I), and loosely supported by and upon a screw71.. When the tool is in use this block it bears upon the back side ofthe lathe tool-rest and serves as a fulcrum upon which the tool may berocked as indicated in dotted lines in Fig. 3.

My described improvements add greatly to the efficiency of this class oftools without 5 materially increasing their cost.

What I claim is- 1. An emery wheel dresser of lever form consisting of ahandle having revolubly mounted therein a threaded dressing roll, andhaving IO a fulcrum consisting of anti-frictional rolls secured adjacentto said dressing roll, substantially as and for the purpose specified.

2. An emery wheel dresserof lever form,consisting of a handle havingrevolubly mounted 15 in one end a dressing roll, and having a fulcrumconsisting of a centrally located, loosely GEORGE W. KAMERER.

Witnesses:

FRANK H. ALLEN, ALONZO M. LUTHER.

